Vulnerability CVE-2015-5309
Published: 2015-12-07

Description:
Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.

Type:

CWE-189

 (Numeric Errors)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Simon tatham -> Putty 
Opensuse -> LEAP 
Opensuse -> Opensuse 
Novell -> LEAP 
Novell -> Opensuse 

 References:
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173021.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173094.html
http://lists.opensuse.org/opensuse-updates/2015-11/msg00099.html
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html
http://www.debian.org/security/2015/dsa-3409
http://www.securitytracker.com/id/1034308
https://security.gentoo.org/glsa/201606-01
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